Originally Posted by i race rc cars
i was wondering whitch would be better building one or buying one
If you are talking about building a faster class car (Say Top Fuel) I would buy one. The manufacturers who are into the drag racing scene have really got there stuff together when it comes to building the chassis and having the right layout.
A little extra money on the front side of you getting into it will go a long way in the frustration department.
When I dealt with the Lockmanns they already had their chassis' sorted out, knew which servo's to run, what gearing, how far forward/back to run the batteries etc etc.
I went right out of the gate and was tickling the TF Funny Car record of that time. Some of the biggest secrets was which slot car "glue" to use on the tires. (It's like setting up the clutch on the real fuelers) Too thin and you spin the tires and put your rig into the wall, too thick and you go too slow.
A couple of words of advice;
Don't spend a fortune on a custom painted body until you get your rail dialed in.
Buy a couple of packs of front tires (o-rings, they always come off on the big end)
Watch, listen and learn from the fast guys. Don't always believe what you hear and try everything at least once if you want to learn to go fast.